Media type: E-Article Title: Existence of Approximate Cores with Incomplete Preferences Contributor: Grodal, Birgit Published: JSTOR, 1976 Published in: Econometrica, 44 (1976) 4, Seite 829 Language: Not determined DOI: 10.2307/1913452 ISSN: 0012-9682 Keywords: Economics and Econometrics Origination: Footnote: